ChemInform Abstract: Crystal Structures and Properties of Europium Aluminum Oxynitride Eu₂AlO_3.75N_0.1 and Europium Aluminum Oxide EuAl₂O₄.

Abstract

Crystal Structures and Properties of Europium Aluminum Oxynitride Eu2AlO3.75N0.1 and Europium Aluminum Oxide EuAl2O4. -Eu2AlO3.75N0.1 (I) and EuAl2O4 (II) are synthesized by reaction of Eu2O3, AlN, and Al2O3 with Eu/Al ratios of 2:1 and 1:2, respectively (silica tubes, 1200°C, 10 h). The new compound (I) crystallizes in the monoclinic space group I2 (powder XRD), and exhibits a novel distorted Ruddlesden-Popper type structure. The phosphor (II) crystallizes in the monoclinic space group P21. It shows a photoluminescence emission peak around 515 nm and excitation peaks around 430 nm. -(TEZUKA*, K.; TOKUHARA, Y.; WAKESHIMA, M.; SHAN, Y. J.; IMOTO, H.; HINATSU, Y.; Inorg. Chem. 52 (2013) 22, 12972-12979, http://dx.